Let's get this math done. We have 786 and we're going to multiply it by 77. This is the same as taking 786 and adding it to itself 77 times.
Step 1: 0 + 786 = 786
Step 2: 786 + 786 = 1572
Step 3: 1572 + 786 = 2358
Step 4: 2358 + 786 = 3144
Step 5: 3144 + 786 = 3930
Step 6: 3930 + 786 = 4716
Step 7: 4716 + 786 = 5502
Step 8: 5502 + 786 = 6288
Step 9: 6288 + 786 = 7074
Step 10: 7074 + 786 = 7860
Step 11: 7860 + 786 = 8646
Step 12: 8646 + 786 = 9432
Step 13: 9432 + 786 = 10218
Step 14: 10218 + 786 = 11004
Step 15: 11004 + 786 = 11790
Step 16: 11790 + 786 = 12576
Step 17: 12576 + 786 = 13362
Step 18: 13362 + 786 = 14148
Step 19: 14148 + 786 = 14934
Step 20: 14934 + 786 = 15720
Step 21: 15720 + 786 = 16506
Step 22: 16506 + 786 = 17292
Step 23: 17292 + 786 = 18078
Step 24: 18078 + 786 = 18864
Step 25: 18864 + 786 = 19650
Step 26: 19650 + 786 = 20436
Step 27: 20436 + 786 = 21222
Step 28: 21222 + 786 = 22008
Step 29: 22008 + 786 = 22794
Step 30: 22794 + 786 = 23580
Step 31: 23580 + 786 = 24366
Step 32: 24366 + 786 = 25152
Step 33: 25152 + 786 = 25938
Step 34: 25938 + 786 = 26724
Step 35: 26724 + 786 = 27510
Step 36: 27510 + 786 = 28296
Step 37: 28296 + 786 = 29082
Step 38: 29082 + 786 = 29868
Step 39: 29868 + 786 = 30654
Step 40: 30654 + 786 = 31440
Step 41: 31440 + 786 = 32226
Step 42: 32226 + 786 = 33012
Step 43: 33012 + 786 = 33798
Step 44: 33798 + 786 = 34584
Step 45: 34584 + 786 = 35370
Step 46: 35370 + 786 = 36156
Step 47: 36156 + 786 = 36942
Step 48: 36942 + 786 = 37728
Step 49: 37728 + 786 = 38514
Step 50: 38514 + 786 = 39300
Step 51: 39300 + 786 = 40086
Step 52: 40086 + 786 = 40872
Step 53: 40872 + 786 = 41658
Step 54: 41658 + 786 = 42444
Step 55: 42444 + 786 = 43230
Step 56: 43230 + 786 = 44016
Step 57: 44016 + 786 = 44802
Step 58: 44802 + 786 = 45588
Step 59: 45588 + 786 = 46374
Step 60: 46374 + 786 = 47160
Step 61: 47160 + 786 = 47946
Step 62: 47946 + 786 = 48732
Step 63: 48732 + 786 = 49518
Step 64: 49518 + 786 = 50304
Step 65: 50304 + 786 = 51090
Step 66: 51090 + 786 = 51876
Step 67: 51876 + 786 = 52662
Step 68: 52662 + 786 = 53448
Step 69: 53448 + 786 = 54234
Step 70: 54234 + 786 = 55020
Step 71: 55020 + 786 = 55806
Step 72: 55806 + 786 = 56592
Step 73: 56592 + 786 = 57378
Step 74: 57378 + 786 = 58164
Step 75: 58164 + 786 = 58950
Step 76: 58950 + 786 = 59736
Step 77: 59736 + 786 = 60522

So, 786*77 = 60522